If ure main is the account your gonna save for later only then all u need is to get the chars to 90.
After 90 theres no benefits from rafs extra xp.
And for raf to work the chars must be in 3 lvl range or it wont work.
And considering timesaver and cost 2 new accounts is cheap at the moment.
So for this to work in range to and timesaver a would do this.
Main acc rafing to a second account.
Second account rafing a third. So they benefits raf.
By doing this. Every char that lvl 1-90 on second acc can grant 42 lvls to main.
Example.
Ac2 and ac3 lvl 1 chars. Kill mobs to lvl 10. Start boosting dungs with main lvl 100 to 90
do this as many chars u want to boost to 90. Make sure one of third acc is a rogue. Ass. Sub for the speed and aoe
when ure done. Create chars on main. And at same time acc2 for raf xp. Use acc3 rogue to boost then in dung to 48.
The use acc2 90 chars and boost to 90.
Remember to grt so close to ding cuz if ute close to ding thats still close at 90 so u basically get 90-91 free